Mersen ggu5 Midget Fast-acting Glass Fuse 5A 125VAC

Product Description

The MERSEN ggu5 is a midget, fast-acting glass fuse rated for 5 amps at 125 volts AC with a breaking capacity of 10 kA. Designed for printed circuit board mounting, this GGU-series fuse measures 1.50 inches in length and 0.41 inches in height, conforming to standard midget fuse dimensions of 1-1/2 inches by 13/32 inches. The glass body construction suits applications where visual confirmation of a blown element is useful. At 0.012 pounds, the fuse is compact and suited to space-constrained board-level installations. This fuse is not rated for branch circuit protection.

The ggu5 is intended for use in electronic equipment, control panels, and instrumentation where fast-acting overcurrent protection is required at the board or component level. Typical installations include low-current secondary circuits, control transformers, and sensitive electronics operating on 125VAC circuits. The GGU series is a recognized option for OEM equipment designers and service technicians working on commercial and industrial control systems requiring midget-format fuse protection.

Key Features

• Fast-acting response for protection of sensitive electronic components
• Glass body allows visual inspection for blown element without removal
• Standard midget fuse dimensions: 1.50 inches x 0.41 inches for broad holder compatibility
• 10 kA breaking capacity at 125VAC
• PC mount design for direct board-level installation
• Not rated for branch circuit protection — suitable for supplementary protection applications

Compatibility

Designed as a midget-format supplementary fuse for PC mount fuse holders accepting GGU-series fuses rated at 125VAC. Alternate manufacturer part number E213973 is associated with this fuse.

Installation Notes

Installation should be performed by a qualified electrician or electronics technician following applicable NEC guidelines for supplementary fuse applications. De-energize and lockout the equipment before replacing the fuse. Confirm the replacement fuse matches the exact current rating, voltage rating, and physical dimensions of the original. Do not substitute a fuse with a higher current rating as a workaround for repeated overcurrent events.